#54769 - After a few unmistakeably flirtatious conversations, in one of which Belinda had apparently absent-mindedly undone her top three shirt buttons to give the bigger and taller girl a good view of her bra and cleavage, she had served up a pretext by asking Susan for assistance with some maths problems she was stuck on. The Headmistress came to stand between her spread thighs once again, and rested a hand on Susan’s right breast, tracing its contours and then tweaking the nipple. ‘Ooooohhh!’ gasped Susan, writhing slightly under this tantalising touch, but she found she could not move very much, as the Headmistress placed her other hand firmly in the small of Susan’s back, pinning her down to the desk.